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| author | Mark Rutland <mark.rutland@arm.com> | 2016-06-01 12:07:17 +0100 |
|---|---|---|
| committer | Will Deacon <will.deacon@arm.com> | 2016-06-03 10:16:21 +0100 |
| commit | a13e3a5b54e59ffdeba738ea6cb57a7856425206 (patch) | |
| tree | f2a4eed18a2580deb7ace94a91e3808b65d5380d /arch | |
| parent | 5988a363edb9eb9f31486ceb2cd10e8b45f05dda (diff) | |
| download | linux-a13e3a5b54e59ffdeba738ea6cb57a7856425206.tar.bz2 | |
arm64: update stale PAGE_OFFSET comment
Commit ab893fb9f1b17f02 ("arm64: introduce KIMAGE_VADDR as the virtual
base of the kernel region") logically split KIMAGE_VADDR from
PAGE_OFFSET, and since commit f9040773b7bbbd9e ("arm64: move kernel
image to base of vmalloc area") the two have been distinct values.
Unfortunately, neither commit updated the comment above these
definitions, which now erroneously states that PAGE_OFFSET is the start
of the kernel image rather than the start of the linear mapping.
This patch fixes said comment, and introduces an explanation of
KIMAGE_VADDR.
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm64/include/asm/memory.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/arm64/include/asm/memory.h b/arch/arm64/include/asm/memory.h index 72a3025bb583..31b73227b41f 100644 --- a/arch/arm64/include/asm/memory.h +++ b/arch/arm64/include/asm/memory.h @@ -55,8 +55,9 @@ #define VMEMMAP_SIZE (UL(1) << (VA_BITS - PAGE_SHIFT - 1 + STRUCT_PAGE_MAX_SHIFT)) /* - * PAGE_OFFSET - the virtual address of the start of the kernel image (top + * PAGE_OFFSET - the virtual address of the start of the linear map (top * (VA_BITS - 1)) + * KIMAGE_VADDR - the virtual address of the start of the kernel image * VA_BITS - the maximum number of bits for virtual addresses. * VA_START - the first kernel virtual address. * TASK_SIZE - the maximum size of a user space task. |